The doc for DataGrid points to "Customizing the List component" for certain styles, and for alternatingRowColors, it simply has the following:

Specifies colors for rows in an alternating pattern. The value can be an array of two or more colors, for example, 0xFF00FF, 0xCC6699, and 0x996699.

Does anyone have any actionscript for a DataGrid that enables this to work? I've tried a few different ways of doing this with no luck. Thanks.

try this:

Hi, you should provide an array of colors that you want appear alternating in your grid. For example, let name your datagrid "myGrid", and you want alternating colors, do the following:

myGrid.alternatingRowColors = ["0x666666","0x999999", "0xFF0000"];
//you can specify more than 2 colors